1. Solution[s] of linear systems of high order;Bargmann,1963
2. Lectures on a theory of computation and complexity over the reals (or an arbitrary ring);Blum,1990
3. On a theory of computation and complexity over the real numbers: NP-Completeness, recursive functions and universal machines;Blum;Bull. Am. Math. Soc.,1989
4. Complexity and Real Computation;Blum,1998
5. Computing over the reals: Where Turing meets Newton;Blum;Not. Am. Math. Soc.,2004